2172908681179 has 4 divisors (see below), whose sum is σ = 2184167275576. Its totient is φ = 2161650086784.

The previous prime is 2172908681149. The next prime is 2172908681213. The reversal of 2172908681179 is 9711868092712.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2172908681179 - 2⁵ = 2172908681147 is a prime.

It is a super-2 number, since 2×2172908681179² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2172908681149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5629296909 + ... + 5629297294.

It is an arithmetic number, because the mean of its divisors is an integer number (546041818894).

Almost surely, 2^{2172908681179} is an apocalyptic number.

2172908681179 is a deficient number, since it is larger than the sum of its proper divisors (11258594397).

2172908681179 is a wasteful number, since it uses less digits than its factorization.

2172908681179 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11258594396.

The product of its (nonzero) digits is 6096384, while the sum is 61.

The spelling of 2172908681179 in words is "two trillion, one hundred seventy-two billion, nine hundred eight million, six hundred eighty-one thousand, one hundred seventy-nine".